late and acuminate leaflets, 1-3 inches long, doubly serrate and 

 teeth spinulose, base truncate, lower side white with compact 

 and very fine wool, upper side green and nearly glabrous, 

 veins conspicuous; fruit red, about the size of R. leucoder- 

 mis and whole plant closely resembling that species ; no straw- 

 colored deciduous needles. Chuichupa, Sierra Madre Mts., 

 Chihuahua. Mex., Middle Temperate Life Zone, Sept., 1903. 



Pyrus loensis is almost uniformly credited to Bailey but 

 he is not the author of this combination. Carruth in his Cata- 

 logue of Kansas plants, page 48 (1877), published this name 

 four years before Bailey used it in American Garden 12, 473 

 (1881). The proper name of the plant is Pyrus loensis Wood, 

 in Carruth Cat. Kans. 48 (1877). 



Potentilla nervata n. sp. 



Erect, strict, ly^ feet high, slender; stems leaves about 

 3, distant ; whole plant glabrous or nearly so except the young 

 leaves and the coarsely villous calyx ; root leaves with glabrous 

 stipules and sheaths ; lower stipules linear-subulate, upper ob- 

 liquely lanceolate, entire ; basal petioles 3-4 times the leaflets ; 

 leaflets 5, digitate, linear-oblanceolate to oblong- oblanceolate, 

 11/4-2 inches long, sharply serrate to within half to two-third 

 of the end, cuneate below, with very thick midrib, obtuse ; up- 

 per stem leaflets linear; flowers corymbose; fruiting pedicels 

 slender, 1-2 inches long below ; calyx 5 Hues long, lobes broadly 

 triangular. 1>4 lines long in fruit, very acute, bracteate, about 

 two-thirds as long and blunter but very small and narrow in 

 flower; petals yellow, obcordate, 3-4 lines long; seeds >< line 

 long, obliquely ovate and spirally nerved with branching 

 nerves. This has the seeds of P. Thurberi nearly and the 

 flowers and habit of P. pulcherrima. Mound Valley near Chui- 

 chupa, Sierra Madre Mts., Chihuahua, Mex., at 7.000 feet alt., 

 in the Middle Temperate Life Zone, Sept. 18, 1903. 



Oenothera (Sphaerostigma) deserti n. sp. 



Habit of O. chamaenerioides in the slender stems, inflores- 

 cence, leaves and pubescence; lower bark scaling off in flakes, 

 white ; most of the leaves linear, the lower remotely denticu- 

 late: pods not contracted at either end, 1^-2 inches long, 

 y2 line wide, somewhat reflexed at base and variously arched 

 above ; calvx tube 4 lines long; petals 3-4 lines long, white ; se- 

 pals puberulent, spreading and not reflexed ; style exserted. 

 This appears like a hybrid between O. strigulosa and O. chim- 

 itenerioides but the former is not known within 200 ir.ile? c: 



